Home / 14,161.84-21,240.60-7,918

Finding the Fourth Proportional to 14,161.84, 21,240.60 and 7,918

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Solution

The fourth proportional to 14,161.84, 21,240.60 and 7,918 is: 11,875.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,161.84 : 21,240.60 = 7,918 : x
  2. Step 2: Convert to fraction form
    14,161.84/21,240.60 = 7,918/x
  3. Step 3: Cross multiply
    14,161.84x = 21,240.60 × 7,918
  4. Step 4: Simplify right side
    14,161.84x = 168,183,070.80
  5. Step 5: Solve for x
    x = 168,183,070.80/14,161.84
  6. Step 6: Final answer
    x = 11,875.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.